Watch case



FIG. 1 is a front view of a watch case showing the new design;

FIG. 2 is a rear view thereof;

FIG. 3 is right side view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a top view thereof;

FIG. 6 is a bottom view thereof; and,

FIG. 7 is a front, right, and bottom perspective view thereof.

The broken lines in the drawings show portions of the watch case that form no part of the claimed design. 

CLAIM The ornamental design for a watch case, as shown and described. 